仁爱版九年级上Unit2Topic3SectionC课件.pptx

Unit 2 Topic 3 What kinds of things can we do to protect the environment?Section C-By David-By David1._ its raining hard,he keeps on working outside.2.Kangkang can play the voilin,_ I cant.3.Mr.Lin is very kind _ he is very humorous,too.4.The suit fits me well _ I cant afford it.Though while and but Fill in the blanks using but,and,though and while.Revision:What new ways have been invented to produce power?electric vehiclebiogas technologyWhat new ways have been invented to produce power?maglev trainwater batteryLook up these words in a dictionary.power acid rain nuclear renewable electric efficient电力；电力；动力；力动力；力酸雨酸雨原子核的，原子核的，原子能的；原子能的；核动力的核动力的可更新的可更新的电动的，电动的，用电的用电的效率高的；效率高的；有能力的有能力的Wind is used for producing electricity in many places.Look at the following pictures and guess the meaningof the underlined word.More and more people are interested in electric cars.The maglev train in Shanghai uses magnets.The magnets push the train forward.people produce power from coal,but it is very dirty and causes acid rain.Nuclear power is clean but it is very dangerous.1aChoose the right picture for each paragraph.In many countries,people produce power from coal,but it is very dirty and causes acid rain.Some countries use nuclear energy to produce power.However,nuclear power can be very dangerous.To solve the energy problem,people all over the world are looking all the time for new ways to produce power.abcc_China is one of the first countries in the world to use biogas technology.Farmers recycle straw,grass and animal waste to make biogas.This renewable energy is used in peoples everyday life.abcChoose the right picture for each paragraph._ Electric vehicles were developed in the 1990s.Now there are electric vehicles in many countries.They are very efficient and cost very little to run.Although electric vehicles produce no pollution,there will be an increase in electricity needs if they are widely used.aabc_ In China,the best-known maglev train is the German-built one in Shanghai.It takes people 30km to the airport in just 7 minutes and reaches a top speed of 431 km per hour.It is quiet and quick.There is no wheel noise,because there are no wheels.Maglev trains are very energy efficient and do not pollute the air.However,maglev guide paths are much more expensive than traditional street railways.babc1.Why isnt coal a good material?2.What is the disadvantage of using nuclear power?3.What do you think of electric cars?4.What do you think of the maglev train?Because it is very dirty and causes acid rain.Because it can be very dangerous.It is quiet and quick.They are very efficient and cost very little to run.Answer the following questions according to 1a.Read 1a again and fill out the following table.Way to produce powerAdvantageDisadvantagebiogaselectric vehiclemaglev trainrenewable efficient,cheap,no pollution quiet,quick,energy efficient,no pollution It will cause an increase in electricity needs.much more expensive than traditional trains.1bpower stationsthe movement of waterthe wind powersolar energya.There are more than 3 000 power stations in the world that produce electricity by burning garbage to heat water.b.People use the movement of water to produce electricity.c.Wind is used for producing electricity in many places.d.People produce electricity from the sun.(b )(c )(d )(a )2aWhat habits are good for the environment?List as many as you can.The more you list,the greener you are.Good Habits1.Turn off the lights when you leave a room.2.Walk or ride a bike instead of taking a bus or a taxi.3.Take a cloth bag when you go shopping.4.Dont use plastic bags.3Homework:1.Copy the words and phrases.抄写单词和词组。抄写单词和词组。2.Study Case:导学案导学案Unit 2 Topic 3 Section C3.Recite 1a Passage.背诵背诵1a课文。课文。